公开(公告)号：US20160003677A1

公开(公告)日：2016-01-07

申请号：US14854326

申请日：2015-09-15

Applicant: POLARIS SENSOR TECHNOLOGIES, INC.

Inventor： J. Larry Pezzaniti ,  Justin Parker Vaden ,  Michael Ernest Roche

IPC: G01J4/04 ,  G01J5/10

CPC classification number: G01J5/58 ,  G01J4/04 ,  G01J5/10 ,  G01J2004/001 ,  G01J2005/0077 ,  G01J2005/586 ,  G02B5/3058 ,  H04N5/33

Abstract: A long wave infrared imaging polarimeter (LWIP) is disclosed including a pixilated polarizing array (PPA) in close proximity to a microbolometer focal plane array (MFPA), along with an alignment engine for aligning and bonding the PPA and MFPA and method for assembly.

Abstract translation: 公开了一种长波红外成像旋光仪（LWIP），其包括紧邻微测热计焦平面阵列（MFPA）的像素化偏振阵列（PPA）以及用于对准和粘合PPA和MFPA的对准引擎以及用于组装的方法。

公开(公告)号：US07265847B2

公开(公告)日：2007-09-04

申请号：US11333203

申请日：2006-01-18

Applicant: Gaetan Duplain ,  Richard Van Neste

Inventor： Gaetan Duplain ,  Richard Van Neste

IPC: G01B9/02

CPC classification number: G01J5/58 ,  G01J2005/583 ,  G01J2005/586 ,  G01K11/32 ,  G01K11/3213

Abstract: The invention concerns a tandem interferometer for temperature sensing. The low coherence interferometry (LCI) system comprises a polarization-based sensing interferometer comprising a birefringent crystal having a sensor temperature sensitivity and a birefringence dispersion, and a readout interferometer being either a Fizeau interferometer using an optical wedge or a polarization interferometer using a birefringent wedge. In one embodiment of the invention, the birefringent crystal has dispersion properties similar to that of the birefringent wedge or that of the optical wedge of the readout interferometer. The present invention also provides a signal processing method for correcting the dispersion effect and for noise filtering in LCI-based optical sensors of the tandem interferometer arrangement.

公开(公告)号：US06462826B1

公开(公告)日：2002-10-08

申请号：US09462981

申请日：2000-03-06

Applicant: John Howard

Inventor： John Howard

IPC: G01B902

CPC classification number: G01J5/04 ,  G01J1/04 ,  G01J1/0429 ,  G01J3/45 ,  G01J3/453 ,  G01J5/0014 ,  G01J5/0018 ,  G01J5/0044 ,  G01J5/08 ,  G01J5/0803 ,  G01J5/0834 ,  G01J5/58 ,  G01J2005/583 ,  G01J2005/586

Abstract: A method and apparatus for measurement of at least one of brightness, flow velocity and temperature of radiant media are provided. A substantially collimated beam of light having a selected frequency is directed to a linear polariser. The linearly polarised output is directed to an electro-optically active birefringent crystal to separate the output into two characteristic waves and to introduce a first fixed phase delay between the characteristic waves. The birefringent crystal is selectively electro-optically modulated to introduce a second variable phase delay between the characteristic waves and the characteristic waves are combined to interfere prior to detection.

Abstract translation: 提供了用于测量辐射介质的亮度，流速和温度中的至少一个的方法和装置。 具有选定频率的基本上准直的光束被引导到线性偏振器。 线性偏振输出被引导到电光学上有效的双折射晶体，以将输出分离成两个特征波并且在特征波之间引入第一固定相位延迟。 双折射晶体被选择性地电光调制以在特征波之间引入第二可变相位延迟，并且特征波被组合以在检测之前被干扰。

公开(公告)号：US4257106A

公开(公告)日：1981-03-17

申请号：US042112

申请日：1979-05-24

Applicant: Siegfried O. Auer

Inventor： Siegfried O. Auer

IPC: G01J5/00 ,  G01J5/58 ,  G01N21/21 ,  G01J4/00

CPC classification number: G01N21/21 ,  G01J2005/0081 ,  G01J2005/586

Abstract: A method of daytime imaging in a range of thermal wavelengths (3-5 microns) which includes specularly reflected solar radiation. Mathematical processing serves to separate the thermal and specular reflection components based on Fresnel's equations which relate the thermal component to three variables: the total radiation intensity; the degree of polarization of the total radiation; and the degree of polarization of the specular reflection component. The first two of these variables may be measured by means of a photometer which is scanned across a target area, and a suitably oriented polarizing filter. The third variable can be calculated as a function of two other quantities: the angle of incidence of sunlight on the target object and the index of refraction of the target object. The first of these two quantities is calculable from time and geographical position data, while the second can be estimated with sufficient accuracy. Each calculation produces a single pixel, and a succession of such pixels is used to build up an image upon a CRT raster which is synchronized with the photometer scan.

Abstract translation: 包括镜面反射太阳辐射在内的一系列热波长（3-5微米）的日间成像方法。 数学处理用于分离基于菲涅尔方程的热和镜面反射分量，其将热分量与三个变量相关：总辐射强度; 总辐射的极化程度; 以及镜面反射分量的偏振度。 这些变量中的前两个可以通过在目标区域上扫描的光度计和适当取向的偏振滤光器来测量。 第三个变量可以作为另外两个量的函数来计算：目标物体上的太阳光的入射角和目标物体的折射率。 这两个数量中的第一个可以从时间和地理位置数据计算，而第二个可以以足够的精度估计。 每个计算产生单个像素，并且使用一系列这样的像素在与光度计扫描同步的CRT光栅上建立图像。

公开(公告)号：WO2007033433A1

公开(公告)日：2007-03-29

申请号：PCT/AU2006/001397

申请日：2006-09-25

Applicant: THE AUSTRALIAN NATIONAL UNIVERSITY ,  HOWARD, John

Inventor： HOWARD, John

IPC: G02B5/30 ,  G01J5/58 ,  H04J14/06

CPC classification number: G02B27/283 ,  G01J3/2823 ,  G01J3/447 ,  G01J5/58 ,  G01J2005/583 ,  G01J2005/586

Abstract: The present invention relates to imaging and in particular to multi-spectral imaging which relies on sampling the time-domain optical coherence at appropriately chosen set of delays. The invention has been developed primarily for use as a multi-coherence imaging system and arrangements of the invention comprise a polarizing image mask for providing angularly multiplexed, dual orthogonal polarized beams, each beam being a replica of an incoming radiation beam from a source, the polarising image mask comprising a first Wollaston prism as a first polarizing component for providing angularly multiplexed radiation beams from the incoming radiation beam, the beams being multiplexed in a first direction; and a split field polarizer comprising adjoining, orthogonally oriented polarizing materials for providing angularly multiplexed, dual orthogonal polarized radiation beams.

Abstract translation: 本发明涉及成像，特别涉及多光谱成像，其依赖于在适当选择的延迟集合上采样时域光学相干性。 本发明主要用作多相干成像系统，本发明的装置包括用于提供角度复用的双正交偏振光束的偏振图像掩模，每个光束是来自源的入射辐射束的复制品， 所述偏振图像掩模包括第一Wollaston棱镜作为第一偏振分量，用于提供来自所述入射辐射束的角度多路复用的辐射束，所述光束在第一方向上多路复用; 以及分离场偏振器，包括邻接的正交取向的偏振材料，用于提供角度复用的双正交偏振辐射束。

公开(公告)号：WO2003034007A1

公开(公告)日：2003-04-24

申请号：PCT/AU2002/001420

申请日：2002-10-18

Applicant: THE AUSTRALIAN NATIONAL UNIVERSITY ,  HOWARD, John

Inventor： HOWARD, John

IPC: G01J3/45

CPC classification number: G01J5/58 ,  G01J3/45 ,  G01J5/00 ,  G01J5/0834 ,  G01J2005/583 ,  G01J2005/586

Abstract: Remote sensing of the temperature of a greybody or blackbody radiator is effected by passing its radiation (24) through a modulated infrared filter spectrometer. The infrared filter comprises, in sequence, a band pass filter (20), a first polariser (21) which polarises the radiation, an electro-optical element (22) which splits the polarised radiation into two orthogonally polarised components, and a second polariser (23). A lens (28) images the radiation leaving the second polariser onto a detector (27). The electrical signal from the detector (27) is input to a numerical analyser. The electro-optical element (22), typically comprising a birefringent crystal assembly (25) and a birefringent trim plate (26), is configured so that the net optical delay of the orthogonally polarised components passed through it is such that the recombined components are at or near a peak or trough in their interferogram. A sinusoidally varying voltage is applied to the electro-optical element to modulate the net delay of the components passed through the electro-optical element. The numerical analyser is programmed to compute the harmonic amplitude ratio (the ratio of signal amplitudes at the fundamental and second harmonic of the frequency of the modulating voltage) of the signal that it receives from the detector (27). The harmonic amplitude ratio is a function of the temperature of the radiator, which can be estimated by reference to a calibration look-up table.

Abstract translation: 通过使其辐射（24）通过调制的红外滤光器光谱仪来实现对灰体或黑体辐射体的温度的遥感。 红外滤光器依次包括带通滤波器（20），偏振辐射的第一偏振器（21），将偏振辐射分成两个正交极化分量的电光元件（22）和第二偏振器 （23）。 透镜（28）将离开第二偏振器的辐射图像到检测器（27）上。 来自检测器（27）的电信号被输入到数字分析器。 通常包括双折射晶体组件（25）和双折射装饰板（26）的电光元件（22）被配置为使得通过它的正交极化分量的净光学延迟使得重组组分为 在它们的干涉图中的峰或谷附近。 将正弦变化的电压施加到电光元件以调节通过电光元件的部件的净延迟。 数字分析仪被编程为计算其从检测器（27）接收的信号的谐波振幅比（在调制电压的频率的基波和二次谐波处的信号幅度的比率）。 谐波振幅比是散热器的温度的函数，可以通过参考校准查找表来估计。